Windows NT 4.0 Service Pack 6a

Name: Windows NT 4.0 Service Pack 6a
Rating: 3.5 (4 reviews)
Author: Microsoft

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Used Windows NT 4.0 Service Pack 6a for Windows?

Editors’ Review

Download.com staffFebruary 25, 2026

This service pack resolves specific issues with Lotus Notes and other Winsock applications. It also provides the latest updates for Windows NT 4.0 and includes Year 2000 fixes.

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4.4

Pros
- Resolves SP6 issues with Lotus Notes
- Addresses other Winsock-based application problems
- Includes latest updates for Windows NT 4.0
- Contains Year 2000 updates
Cons
- Year 2000 updates available separately
- Not a required Year 2000 upgrade

Windows NT 4.0 Service Pack 6a

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Used Windows NT 4.0 Service Pack 6a for Windows?

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Full Specifications

GENERAL

Release: August 28, 2007

Latest update: February 25, 2026

Version: 6.0a

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 10
Windows NT

Additional Requirements: Windows NT

POPULARITY

Total Downloads: 138,128

Downloads Last Week: 7

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User Reviews

3.5/5

4 User Votes

Does exactly what is necessary
sobarberSeptember 30, 2010
Pros
It being available to get NT 4.0 back to this last level of correctness is important if using NT 4.0 is still necessary.
Cons
No more service packs since then, but then again I was not expecting more.
Summary
Finally Found a Working Download!
dennis96411February 21, 2010
Pros
I've been trying to find Windows NT 4.0 SP6 all over Google, but nothing works! I finally found this! YAY!
Cons
Nothing :)
Summary
Now I can finally complete the installment of Windows NT in VMware!
need 128 bit incription. Oh well.
glenruckerMarch 8, 2009
Pros
Nothing to report.
Cons
No 128 bit incription available.
Summary
Since I could not download what I needed, it is not much benefit.
THANK YOU MASTAAAAA!
SaythethurthMarch 2, 2009
Pros
Ha! i went TWO MONHTS SEARCHING THIS! WHEN I FOUND, WAS FOR THE GERMAN EDDITION!
Cons
NOTHING! It is PERFECT!
Summary
Thank you, man. Finaly, the SP6. You can't think hou important is it for me. Sory my bad englysh, i am a brasilian...

Developer’s Description

By Microsoft

Solve SP6 issues with Lotus Notes and other Winsock-based applications.

Windows NT 4.0 Service Pack 6a (SP6a) resolves the SP6 issue with Lotus Notes and other Winsock based applications and provides the latest updates to Microsoft Windows NT Workstation 4.0 and Windows NT Server 4.0 (including Enterprise Edition). Windows NT 4.0 SP6a contains known Year 2000 updates for Windows NT 4.0.

These Year 2000 updates are also available as separate Web downloads that you can apply to a Windows NT 4.0 Service Pack 4 system. Windows NT 4.0 SP6a is not a required upgrade for Year 2000; Microsoft recommends that each customer consult the Windows NT 4.0 SP6a documentation and then determine whether to deploy it. This version is the first release on CNET Download.com.

Windows NT 4.0 Service Pack 6a

Editors’ Review

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Windows NT 4.0 Service Pack 6a

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User Reviews

Does exactly what is necessary

Finally Found a Working Download!

need 128 bit incription. Oh well.

THANK YOU MASTAAAAA!

Developer’s Description